A car is just a box in perspective. Go to the ArtWOD beginner road and work through that. That will teach you the fundamentals of form and perspective which will give you the tools to draw anything you want.
I can't afford it
You can start the beginner road for free. Beyond that there are plenty of free online resources such as Drawabox
Can I get some feedback on a two point perspective drawing or I get feedback later
Yes, when you submit a relevant drawing. Be sure to ask for what you want feedback on. Please try to be specific